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Instrument knowledge point
1. What is the common sense of gfd in the personal workplace?

Code of etiquette for Gfd employees 1. Instrument requirements are as follows: a. Dress neatly, wear work clothes to work, work clothes should be clean and tidy, buttons should be complete, buttons should be buckled, and clothes should not be exposed. Work cards should be worn on the left chest, sleeves and trousers should not be rolled up, and women workers should wear skirts and socks. When wearing ties, they should wear flesh-colored socks.

B, the appearance should be generous, nails should be trimmed frequently, and long nails and colored nail polish should not be left. The hairstyle should be in accordance with the company's requirements. Men should not have long hair, and women should not cover their ears and back collar. Hair should be neat, don't keep long hair, don't cover your eyes in the front, and don't wear it over your shoulders in the back. You should use a uniform hairpin. C, pay attention to personal hygiene, care for teeth, men insist on shaving every day, nose hair is not allowed to come out of the nostrils, hands should be kept clean, brush your teeth in the morning and evening, rinse your mouth after meals, take a bath frequently to prevent sweating and odor, and do not eat smelly food or drink alcoholic beverages before going to work.

D, pay attention to have a good rest, get enough sleep, exercise regularly, maintain a good mental state, and don't look tired when going to work. E. Women should wear light makeup at work, but bracelets, bracelets, rings, earrings and exaggerated headdresses are not allowed. Men and women are not allowed to wear colored glasses unless the necklace is exposed. Make-up should be clean, refreshing and not greasy.

Check your appearance before going to work every day. When you need excellent musical instruments in the public field of talk.an, you should go to the bathroom or workshop where the guests can't see them. Don't talk in front of guests or in public. Before going to work, the front and back office staff should check their instruments and dress neatly before going to work. F. Self-test: Etiquette: greet guests actively, receive guests warmly with a smile, use honorifics, and use Mandarin, Cantonese and English.

Instrument: The clothes are clean, with no seams or buttons. Appearance: face is clean, hair is fresh and tasteless, and nails are often cut.

Manners: Walking, standing, sitting, squatting and posture should be standardized and beautiful at work. Expression: full of energy, cheerful, smiling, moderate enthusiasm, natural and generous, not tired or cold-faced, accurate language, soft voice, not talking loudly, etc.

Did you do it? Appearance: appearance refers to people's appearance: refers to the harmonious beauty of people's appearance, body and posture; * refers to the external expression of inner beauty, which is the essence. * It is the beauty of instrument decoration formed by dressing up.

Second, the social significance of the beauty of gfd: * From the microscopic point of view, it is the expression of personal image and self-esteem; * Macroscopically speaking, it is the symbol of the company image and the embodiment of the company's civilized service level and management level; * objectively reflects the mental outlook and service quality of the new generation of citizens. Expression: Expression is the emotion revealed by human facial dynamics, which is very important in impression. When serving guests, we should pay attention to the following points: a. Smiling is pleasant, giving people a sense of intimacy, rather than a cold and dull expression, giving guests an unwelcome feeling; B, pay attention, pay attention to listen, give people a sense of respect, don't be listless or careless, give the guests a feeling of being ignored.

C, to be honest with the guests, supercilious, give a person a sense of sincerity, don't be afraid, just do Nuo Nuo, give a person a sense of hypocrisy. D, be calm and steady, give a person a feeling of calm, don't panic, give a person a feeling of impatience.

E, to appear calm, relaxed and confident, give people a sense of relief, don't pull a long face, give people a sense of weight. F, don't look bored, stiff and angry; Don't wriggle, make faces, stick out your tongue and blink your eyes, giving people the feeling of disrespect.

3. Etiquette: Etiquette refers to people's behavior in communication activities, including etiquette in daily life and work. The specific requirements are as follows: (1) Stand upright, hold your chest and abdomen, keep your eyes straight, your mouth slightly closed, smile, your arms naturally droop or cross your chest, put your right hand on your left hand, and keep a state of providing services to guests at any time. Don't put your hands on your hips. Don't put your bag in your hands. Toe separation 45%-60%. Knees and heels should be close together. When a person stands, his feet should be shoulder width, and his body should not stagger. When he is tired, he can stand back half a step or move his position, but his upper body should still be upright. He shouldn't stretch his feet forward or backward too much, or even stand with his feet spread out against the wall. * Standard stance training method: 1, standing against the wall; 2. Stand on your back; 3. Stand on the top of the book.

(2) Standing posture requirements for some post personnel: a. Pay attention to the standing posture of the greeter. In addition to the above requirements, the arms naturally droop, the heels are close together, and the toes are naturally separated (including the outside, just the length of the feet) with a smile. If guests come in and out, their feet can relax a little. When guests arrive, they should immediately return to normal posture, put their hands on both sides of their thighs and bend their fingers slightly. B, the waiter's upper body is straight, his feet are separated (the heel separation distance is less than 8CM), and his arms naturally droop. Both men and women can use the back hand style (back style), with their hands gently behind their backs, or with their hands on their small abdomen (front belly style). C, receptionist upper body straight feet apart, the arm can be properly handled, but can't hold the arm (front abdomen).

Four. Walking posture: Walk lightly and steadily, and pay attention to holding your head up and chest out, abdomen in, shoulders flat, and body straight. Women walk in one step (feet can't take big steps), and men walk with their feet following two lines, but the two lines are as close as possible and the steps can be slightly larger. The horizontal distance on the ground is about 3CM, and his arm swings naturally with an amplitude of 30-40CM. When he walks, the man walks. When you have to pass by the guests because of work needs, you should apologize politely and say you are sorry. At the same time, pay attention to: 1, as far as possible to the right, not to the middle; When meeting with superiors and guests, you should nod your head as a gift. 3. When you accompany your superiors and guests to the door, you should take the initiative to open the door and let them go first. You can't beat yourself. 4. When guiding the guests, let the guests and superiors be on their right; 5. When going upstairs, the guests are in front, and when going downstairs, the guests are behind. Three people walk together, the guest is in the middle, and the lady is allowed to walk on the sidewalk.

2. Basic knowledge of instruments `` Who knows?

Open a library member at a minimum of 0.27 yuan, and check the complete content > Original publisher: pinky6 173 electrical instrument knowledge contest question bank 1, cable generalized wire and cable is also referred to as cable.

Cable in a narrow sense refers to insulated cable. It can be defined as a * * body composed of the following parts, one or more insulated wire cores, and their respective possible cladding layers, total protective layers and outer protective layers.

Cables may also have additional uninsulated conductors. ? Basic structure of wire and cable: conductor and insulator.

2. Currently? Generally, the safe cross-sectional flow of copper conductor is 5-8A/ mm2, and that of aluminum conductor is 3-5A/ mm2. In single-phase 220V line, the current per 1KW power is about 4-5A, and in three-phase circuit with three-phase load balance, the current per 1KW power is about 2A.

That is to say, in a single-phase circuit, every 1mm2 copper conductor can bear the power load of 1KW; The three-phase balanced circuit can bear 2-2.5KW power. However, the greater the working current of the cable, the smaller the safe current per square millimeter.

? The formula of allowable safe working current of cable: 10 times five (less than 10 times five), 100 times two (more than 100 times two), 2 times 500 times three (2 times four, 3 times five times three), 7 times five times five (both lines of 7, 9 times five are multiplied by 2.5), and the pipe-passing temperature is 10% off (multiplied by 0.8 or 0.9 on the calculated safe current as the temperature changes). Copper wire upgrade calculation (aluminum with the same cross section) If the 2.5-point copper core wire is one step higher than the 2.5-point aluminum core wire, it shall be calculated by adding half (on the basis of the original calculation of safe current) to the bare wire of 4 square mm aluminum core wire. 3. What kinds of common electric (wire) cables are there? Meaning of cable specification and model: In the wire model, the letter B stands for laying wire, the letter V stands for PVC in plastic, and the letter R stands for flexible wire (conductors are twisted together with many filaments). There are also symbols that omit copper core and hard wire (ordinary single-core conductor).

Ordinary cable type: BV- indicates single copper core polyethylene.

3. What basic knowledge should the instrument learn?

Main subjects: instrument science and technology, optical engineering, mechanical engineering, electronic information engineering, computer science and technology.

The discipline of instrument science and technology is the theoretical and practical basis of this major. This paper mainly studies the measurement theory and method, discusses and studies the working principle and application technology of various measuring instruments, and the design method of intelligent instruments. Optical engineering is the application foundation of this major, which mainly studies the basic theory and application technology of optical measuring instruments and photoelectric test information acquisition and channel transmission.

Mechanical engineering is the basis of instrument structure design, which mainly studies the system architecture, motion transmission, magnitude sensing and result indication of mechanical measuring instruments, optical measuring instruments and electronic measuring instruments. Electronic information engineering is the theoretical and technical foundation of this major. It mainly studies the basic theory and application technology related to information acquisition technology and information processing, and realizes the functions of signal acquisition, conversion, conditioning, transmission and processing, and equipment control, driving and execution.

Computer science and technology is the technical foundation of this major. It mainly studies the design and application methods of computer software and hardware and the transmission and processing technology of digital information in intelligent instruments and meters, and promotes the rapid development of instruments and meters in the direction of digitalization, intelligence, virtualization and networking. For more details, please pay attention to Youxun.com.

4. Ask primary school students about the etiquette knowledge of gfd.

What are the ways of etiquette education for primary school students? 1. Personal etiquette includes gfd, etiquette, speech and dress.

From the perspective of gfd, the main requirements are cleanliness, and the face, neck and hands should be washed clean; Hair should be cut on time, washed frequently and nails should be cut frequently; Pay attention to oral hygiene, brush your teeth in the morning and evening, rinse your mouth after meals, and don't chew gum in front of guests; Take a bath and change clothes frequently to eliminate body odor. If you have body odor, you should take medicine or treatment as soon as possible. From the aspect of manners, the requirements are mainly from the aspects of standing, sitting, walking, demeanor, movement and so on. The ancients once summarized the image of human posture: "Stand like a pine and cypress, walk like a breeze, sit like a bell, and lie like a bow."

Beautiful standing posture gives people a feeling of being tall and straight and spirit. Stand upright, hold your chest and abdomen, and your toes are slightly V-shaped. Avoid listlessness, neck control, shrugging and collapse; Don't cross your hips or hands on formal occasions; Sit upright, not stiff, not lying and sitting. The distance between your legs should be shoulder width, and don't separate your hands. You should naturally put your hands on your knees or handrails, and be generous and decent. Walk with your chest out, swing your shoulders and arms naturally, and walk at a moderate pace, avoiding splayed feet, shaking or rolling steps; Expressions and manners require showing respect, understanding and kindness to people, smiling naturally, and avoiding bad action habits such as picking teeth, picking ears, picking nose, scratching feet and pinching feet.

In terms of speech, we should be sincere and kind, use civilized language, be concise and decent, not be silent and not chatter on our own. Listen carefully to each other and avoid looking around and looking at other things when you are talking. There are many people talking. Don't just talk to one person and ignore others.

From the point of view of dress, it is required to be clean and tidy, fit, and wrinkle is prohibited. 2. Etiquette in public places * * * Etiquette in public places includes walking, asking for directions, taking a bus, shopping and going to the theatre.

In addition to paying attention to posture and posture, you should also abide by traffic rules, greet and greet acquaintances, and you should not turn a blind eye; If you need to talk to an acquaintance, you should pull over or find a corner to talk. You shouldn't stand in the middle of the road or in crowded places. Pedestrians give way to each other, young people give way to the elderly, and healthy people give way to the disabled. When asking someone for directions, first say hello in polite language, such as "Sorry to bother you" and "Excuse me". When young people ask for directions, they should choose appropriate names, such as "grandpa", "aunt" and "uncle" before asking for directions. After listening to the answer, be sure to say "thank you!" "If you are asked by a stranger, you should answer carefully. If you don't know, you should say, "Sorry, please ask someone else. "

When shopping in the store, don't pretend to be "God", use polite expressions and avoid using words such as "Hello" and "Cough". You should also say "thank you" after shopping. In the theater, you can't talk loudly, and you can't litter and peel. Try to be present and seated as early as possible; If you are late, walk low and fast when sitting; When watching a live performance, you should respect the actors and applaud politely. When an actor takes a curtain call, he can't leave early.

By bus, car and train, people are crowded, so we should take care of the elderly, children and the disabled. People bump into each other, don't swear, understand and tolerate; Keep the car clean and don't throw things around; Students should not grab seats when they get on the bus. 3. Hospitality and hospitality etiquette When guests come from home, they should make preparations in advance and tidy up their rooms.

Primary and secondary school students should also learn to entertain guests as hosts. Welcome the guests into the house, help them put their clothes on, and ask them to sit in the right place.

Ask the guests what to drink and offer it to them. It is necessary to present and receive objects with both hands.

Take the initiative to talk to the guests generously. When guests leave, they should be polite and say "please sit down for a while" and "have another cup of tea".

See the guests off from a distance and say "goodbye" and "welcome again". When visiting relatives and friends, be neat and tidy, and bring some small gifts as much as possible to show respect for the host.

In the home of relatives and friends, you should not speak loudly, but speak politely. Don't use the things in the owner's house without the owner's permission. Even close relatives and friends should say hello first and ask the owner's permission.

If you eat in the host's house, you should pay attention to etiquette when eating: don't sit down first, don't touch the food first; Please sit down before you move chopsticks, and don't put your elbows on the table. After dinner, sit back and accompany you for a while, or say, "I'm finished, please take your time." Then leave your seat and go to another room to rest.

When you say goodbye, you should say thank you, such as "I am very happy today" and "Welcome to my home". These are some basic etiquette in life.

Etiquette is embodied in life. As long as teachers pay more attention to daily education and teaching, set an example, correct it in time, and gradually make students develop the habit of civilized manners, then our student ID card will certainly become a modern civilized person with temperament, grace and education. How to carry out civilized etiquette education among primary school students should pay attention to the following points.

1, fine, that is, the requirements of civilized etiquette education should be refined. To carry out civilized etiquette education, students should first make clear the requirements of civilized etiquette convention, which is an important first step to carry out civilized etiquette education.

Because primary school students are young and have poor cognitive and understanding abilities, abstract thinking has not been fully developed. Therefore, the requirements for them should be clear, specific and detailed, and the enforceability of the requirements should be improved. For example, there are specific requirements for students' civilized etiquette during recess: after class, the students on duty are responsible for cleaning the blackboard and cleaning up the classroom, and other students go outside the classroom to see the green or do outdoor activities.

Speak and behave in a civilized way. Use polite expressions: please, you, hello, thank you, sorry, never mind, goodbye; Use good body language: smile, bow, shake hands, wave, clap and salute correctly.

These requirements are very detailed and specific, which is helpful for students to follow and for teachers to check students' implementation. 2. Suitability, that is, the civilized etiquette requirements for specific students must adapt to the specific situation of students.

Education should follow the principle of teaching students in accordance with their aptitude, and so should the education of civilization and etiquette. Teachers should help students set stage goals and make plans according to their weak links, and the goals should be achieved by students through certain efforts, that is, "jumping to it".

"Goals that are too difficult to achieve will make students feel afraid and bound.

5. Learn the professional knowledge of electrical instruments and measurement.

First, associative memory method for pointer instruments, measuring mechanism is its core; For digital instruments, the digital basic table is its core.

Through the radial correlation of the measuring mechanism, the basic situation of the instrument can be seen at a glance. Such as indicating instrument core → measuring mechanism → five-part device → four series instruments → structure, principle, technical characteristics, precautions in use, representative objects, etc.

That is, the measuring mechanism is led out by the pointer core, which is divided into five parts according to the different functions of its components. Three of these five devices are torque devices, which are related to the structural characteristics of four series of instruments through the characteristics and components of three torques, and then to various instruments.

Such as: magnetoelectric ammeter, voltmeter, electromagnetic ammeter, voltmeter, ammeter, frequency meter, phase meter, induction watt-hour meter. In addition, it is also related to multimeter with magnetoelectric system as measuring mechanism, transformer clamp ammeter, megohmmeter with magnetoelectric system ratio meter as measuring mechanism, one-arm bridge with magnetoelectric system as galvanometer, clamp ammeter with electromagnetic system as measuring mechanism, etc.

Second, the formula memory method 1, "short voltage open current, one hundred and fifty amperage" is convenient for you to remember the correct usage and rating of the transformer. Simple eight words, including two meanings. One is that short circuit is prohibited on the secondary side of voltage transformer with rated voltage 100V, and open circuit is prohibited on the secondary side of current transformer with rated current 5A. The second is that the secondary side of voltage transformer works in an open circuit state and can be connected with a fuse, while the secondary side of current transformer works in a short circuit state and cannot be connected with a fuse.

2. "Internal cause is basic and external cause is additional", and eight words summarize the reasons of basic error and additional error. In other words, the errors caused by internal factors are basic errors, such as the friction of the moving parts of the instrument and the improper assembly of the instrument parts; Errors caused by external factors are additional errors, such as the interference of external magnetic field or electric field around the instrument, the sudden change of temperature, and the instrument not being placed in the normal position.

3. The word "left force and right sense" is convenient for you to remember and master the application of the left-hand rule in analyzing the working principle of various instruments, that is, the left-hand rule determines the force and the right-hand rule determines the induced current. 4. The application of single-arm bridge is summarized as follows: "Megaohm is big, double bridge is small, and single bridge is needed in measurement", "Among the bridge arms, it is better than the arm; The less "-",the more "+"; All four gears are used, and the bridge is balanced.

These formulas summarize the precautions and selection principles of the bridge, that is, megohmmeter is used to measure large resistance, double-arm bridge is used to measure small resistance accurately, and single-arm bridge is used to measure medium resistance; In the use of bridge, it is very important to choose the resistance of comparison arm. When the galvanometer pointer deflects in the "+"direction, the resistance of the comparison arm should be increased, otherwise, the resistance of the comparison arm should be decreased. Only when all four gears of the comparison arm (used for one-arm bridge) are used can the bridge be truly balanced. .

6. What are the indicator lights on the car instrument?

Learning Tips: The indicator light on the automobile instrument is also called the instrument light, and its functions can be divided into three types: the first is the display function, such as the turn indicator light, the far and near light, and the small light indicator light. , the general light color is blue or green; The second is the function of reminding the driver, such as brake pad wear, fuel lower limit indication, engine fault indication and so on. This kind of light is generally yellow, reminding drivers to deal with it as soon as possible; The third type is warning light, which is mainly used for warning when the vehicle fails or is abnormal.

The indicators on the automobile instrument include fault indicator, charging indicator, oil pressure indicator and coolant temperature indicator, as shown in figure 10-2. Learning tips: ① Oil pressure indicator: This indicator is used to display the pressure of oil in the engine.

Turn on the ignition switch. When the vehicle is self-checking, the indicator light should be on, and it will be off after starting. ② Coolant temperature indicator lamp: This indicator lamp mainly displays the temperature of the coolant in the engine, and it only lights up for a few seconds during the vehicle self-test, but it doesn't light up at ordinary times.

③ Brake disc indicator light: the indicator light is "!" It's circled Or the letter "p", which is usually closed. When the parking brake is pulled, the indicator light will light up automatically.

(4) ④ABS indicator: The indicator lights up for about 3? It is normal to go out after 4 s. If it is not on or always on, it means there is a fault. You can continue to drive at a low speed, but you should avoid emergency braking.

⑤ Safety gas sign indicator: This indicator mainly displays the working status of the safety gas sign. After turning on the ignition switch, about 3? 4s, not lit or always lit, indicating that the system is faulty.

7. What are their roles?

Automobile instrument is a device used to monitor the working condition of automobile system.

Commonly used instruments in automobiles include oil pressure gauge, coolant thermometer, fuel gauge, speedometer, tachometer and odometer. With the development of automotive electronic technology, multifunctional, high-precision, high-sensitivity and intuitive electronic digital display and image display instruments are constantly applied to automobiles.

The function of automobile instrument is not only simple display, but also various running conditions of automobile can be controlled by monitoring the parameters of automobile parts and processing them by microcomputer. 1) The oil pressure gauge is used to indicate the oil pressure when the engine is running and whether the engine lubrication system works normally. Commonly used oil pressure gauges are electromagnetic, electrothermal and spring tube.

2) The coolant thermometer is used to indicate the engine coolant temperature. 3) The fuel gauge is used to indicate how much fuel is left in the fuel tank.

4) The speedometer is used to display the speed. 5) The tachometer is used to display the engine speed.

6) The odometer is used to indicate the cumulative mileage of the car.